Is there an app that will let me "stream" my iTunes library from anywhere?

I'm looking at SuperSync, but it appears that a) its interface is complicated and clumsy and b) it only allows streaming of MP3 files (not AAC/etc) ... I'm looking for a solution that will let me access my itunes library on my home computer (that is always on) ... Thoughts?? Thanks!

Maybe something like Nice cast could do the trick. I've been using it to let friends listen to my "iTunes DJ set" from their home (within iTunes). The only thing is that I don't know if you can "control" your iTunes Library with it or just listen to what's already playing on your (home) iTunes.

__________________..:.::.:.:.::..:.: Oh, I get it. It's very clever :.:.::.:.:.::.:..:.::..:.::.:..:.::.:.::.:.::..DO NOT OPERATE YOUR COMPUTER UNDER THE INFLUENCE!